Nut-lock



10,575,251.. yPaumned Jan. 12, 1897.V

TNE NORRIS PE'VERS C o resilient material.

UNTTED STATES L zATENT FFICE VERNON ALBERT LAUE AND PAUL FERDINAND LAUE, OF CROSS FORK, PENNSYLVANIA.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 575,251, dated January l2, 1897. Application filed February 1l, 1896. Serial No. 578,890. (No model.)

To @ZZ whom it may concor/L.-

Be it known that we, VERNON ALBERT LAUE and PAUL FERDINAND LAUE, citizens of the United States, residing at Cross Fork,

5 in the county of Potter and State of Pennsyl' vania have invented a new and useful Nut- Lock, of which the following is a speciiication.

The invention relates to improvements in nut-locks.

The object of the present invention is to improve the construction of nut-locks and to provide a simple, inexpensive, and efficient device adapted to be readily applied to bolts and n-uts without altering the construction thereof, and capable of securely locking the nut against accidental unscrewing.

A further object of the present invention is to provide such a device which will be applicable to railroads, machinery, and the like,

zo and which may be readily operated to release a nut when desired.

The invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, illustrated 2 5 in the accompanying drawings, and pointed out in the claims hereto appended.

In the drawings, Figure l is perspective view of a nutlock constructed in accordance with this invention and shown-applied to a 3o bolt and nut. Fig. 2 is a front elevation of the same, the bolt being in section. Fig. 3 is a detail View of the locking device. Fig. 4 is a similar view illustrating a modification of the invention. Fig. 5 is a detail view of a 3 5 locking device, illustrating another modification of the invention.

Like numerals of reference designate corresponding parts in all the iigures of the drawings.

l designates a nut-lock adapted to be applied to a bolt 2 and nut 3 of the ordinary construction. The locking device consists of a substantially circular body having a circular bolt-opening and adapted to embrace a bolt 2, as illustrated in Fig. l of the accompanying drawings, and it is arranged at the outer 'face of the nut to prevent the latter from accidentally unscrewin g. The lookin g device is preferably constructed of steel or other suitable It is adapted to be coinpressed around the bolt, and it is secured in its locked position by means of a pair of arms 4, arranged substantially parallel, extending inward from one end of the body of thelocking device and adapted to receive between them an arm 5, projecting inward from the other end of the body.' The arm 5 is provided with anarrow-head (i, and the arms 4, which are spaced apart to provide an opening for the reception of the arm 5, are provided 6o at their inner faces with inwardly-projecting teeth 7, which are adapted to interlock with the arrowshaped head Gof the arm 5.

The ends 8 and 9 of the body are enlarged to form lugs, vand have straight outer edges adapted to be engaged by a wrench, a pair of pincers, or any other suitable tool for compressing the sides of the body around the bolt to interlock the arms 4 and 5. The sides of the body may be readily released by inserting 7o the point of a screw-driver or other suitable tool between the arms 4l and springing them apart to release the arm 5.

The body is provided at its bolt-receiving opening with an inwardly-extending projec- 7 5 tion lO, beveled at opposite sides and having its point or engaging edge disposed longitudinally of the body and adapted to be inserted between a pair of threads to secure the lock ing device against longitudinal movement on 8o the bolt and to enable it to be readily turned up tight against the nut. After the locking device has been arranged in proper relation to the nut and has been compressed around the bolt it is locked against retrograde rotation by a chisel-point or projection 11, disposed transversely of the body and adapted to engage the threads of the bolt transversely of them. By this construction it will be absolutely impossible for the nut to become ac- 9o cidentally unscrewed, and if the locking device should be forced around the bolt the transverse projection or chisel-point ll would strip the threads from the same.

Instead of employing the projection or 95 point 10 to hold the locking device against longitudinal movement, one of the enlargements or lugs of the body may, as illustrated in Fig. 4 of the accompanying drawings, -be perforated to receive a pin or other suitable too fastening device for engaging one of the faces of the nut, or a projection or lug may be :formed integral with the body for this purpose.

Instead of constructing the body of a single piece of resilient metal the two sides may, as illustrated in Fig. 5 of the accompanying drawings, be connected by a hinge-joint l2, and the i'ree ends of the sides may, as shown in Figs. 4 and 5, be provided with two interlocking arms instead of three, as shown in Figs. l, 2, and

It will be seen that the nut-lock is exceedin gly simple and inexpensive in construction, that it is positive and reliable in operation, and that it is capable of preventing` a nut from accidentally unscrewing. It will also be apparent that it is applicable to all kinds of bolts and nuts employed on railroads, machinery, and the like, and that it does not necessitate any change in the construction of bolts or nuts.

Changes in the forni, proportion, and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of this invention.

l. A nut-lock comprising a body having a circular bolt-receiving opening, arms extending inward from opposite sides of the body and provided with interlocking teeth adapted to engage each other when the body is coinpressed, and lugs located at the outer ends of the arms, presenting straight outer edges and adapted to be engaged by a tool, whereby the body is compressed to interlock the said teeth, substantially as described.

2. A nut-lock comprising a body having a bolt-receivin g opening and provided with enlargements or lugs adapted to receive a tool for compressing the body, a projection eX- tending inward from the body and arranged to engage the threads of a bolt, a pair of arms disposed substantially parallel, extending inward from one side of the body and provided at their outer ends with teeth, and an arm eX- tending inward from the other side of the body and provided with an arrow-head, adapted to be inserted between the said arm and capable of interlocking with the teeth thereof, substantially as described.

In testimony that we claim the foregoing as our own we have hereto affixed our signatures in the presence of two witnesses.

VERNON ALBERT LAUE. PAUL FERDINAND LAUE.

Witnesses:

F. W. Puck, Lnwis EGNELL. 

